Hello

Maybe I am not very helpful, but your question sounds like: "Does somebody have four wheels, and 6-cyl-engine and a stearing wheel I need to repair my car."
Do you really think it makes sense.

> Part 2 Description: IC5 (HD6303XO, timing circuit)

Assumingly this is not an "...XO" but an "...XF", the datasheet does not mention an XO and the case dimension looks like it is an XF
http://www.ebay.com/itm/361788228421

>Part 3 Description: IC37 (PC624C, DA converter)

http://www.jotrin.com/product/parts/PC624C
But I am not sure, whether they sell small quantities.

Florian